1/* Common macro definitions for C include files. 2 Copyright (C) 2009 Free Software Foundation, Inc. 3 4 This program is free software: you can redistribute it and/or modify it 5 under the terms of the GNU Lesser General Public License as published 6 by the Free Software Foundation; either version 3 of the License, or 7 (at your option) any later version. 8 9 This program is distributed in the hope that it will be useful, 10 but WITHOUT ANY WARRANTY; without even the implied warranty of 11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 12 Lesser General Public License for more details. 13 14 You should have received a copy of the GNU Lesser General Public License 15 along with this program. If not, see <http://www.gnu.org/licenses/>. */ 16 17#ifndef _UNISTRING_CDEFS_H 18#define _UNISTRING_CDEFS_H 19 20/* The definition of _GL_UNUSED_PARAMETER is copied here. */ 21/* _GL_UNUSED_PARAMETER is a marker that can be appended to function parameter 22 declarations for parameters that are not used. This helps to reduce 23 warnings, such as from GCC -Wunused-parameter. The syntax is as follows: 24 type param _GL_UNUSED_PARAMETER 25 or more generally 26 param_decl _GL_UNUSED_PARAMETER 27 For example: 28 int param _GL_UNUSED_PARAMETER 29 int *(*param)(void) _GL_UNUSED_PARAMETER 30 Other possible, but obscure and discouraged syntaxes: 31 int _GL_UNUSED_PARAMETER *(*param)(void) 32 _GL_UNUSED_PARAMETER int *(*param)(void) 33 */ 34#ifndef _GL_UNUSED_PARAMETER 35# if __GNUC__ >= 3 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 7) 36# define _GL_UNUSED_PARAMETER __attribute__ ((__unused__)) 37# else 38# define _GL_UNUSED_PARAMETER 39# endif 40#endif 41 42#endif /* _UNISTRING_CDEFS_H */ 43